Process of color-printing.



P. BONNIER.

PROCESS OF COLOR PRINTING. urmunon nun JULY 5, 1011.

1,108,063, Patented Aug. 18, 1914,

$6 erre 3021/22 is r UNITED PATENT oFFioEQ PIERRE team's, or rams, Finance.

' rn ocnss or coLoiePnriv'rnvG.

' s ecification: Letters Patent.

Patented Aug. 18., 1914.

Application filed July 5, 1911. Serial No; 636,901.

the inking rollers and the printing cylinder.

It has for its object to remedy theidisad vantages of the hitherto known processes and mainly the necessity of manufacturing many printing devices and to avoid the difficulties in the starting of the printing ma chine and in obtaining the accordance between the cylinders.

The invention consists in using as auxiliary cylinders to be interposed between the inking rollers and the printing cylinder, auxiliary cylinders having acoating of gelatin, india rubber or any suitable material which is able to take up and to give again the ink; the said auxiliary cylinders, with their coating, having the same diameter as that of the printing cylinder, and each of said auxiliary cylinders corresponding to one of the colors which are to be simultaneously printed with the printing cylinder.

The invention consists further in using the printing cylinder, which carries all the types or the like forming; thewhole of the composition to be printed, to print first on the coating of the auxiliary cylinders the whole of the said composition; in taking away by chemical means or with a tool for by any other suitable means, a suitable depth of the coating of eachone of the said auxil'-' iary cylinders in the parts corresponding to the parts of the composition which are not to be printed with the color to which the auxiliary cylinder corresponds, in' order termined color, only in the parts of its coating which have been left for the taking up of the ink, and give it again to the printing cylinder at the corresponding parts; and the printing cyhnder will immediately print on the paper or the like the composition, which it carries, in as many colors as there are auxiliary cylinders.

Such a process is very easy and very speedy; furthermore it allows aset of auxiliary cylinders to be prepared in advance for the immediate change of an auxiliary cylinder if it is worn out before the end of the printing. And in order that the invention may be more fully understood, it will be more completely described hereinafter with reference to the accompanying drawing which shows diagrammatically a printing machine which is disposed for printing si-' multaneously in two colors, for instance in black and in red.

In the drawing, a is the printing cylinder; Z) a plate on which is the paper or the like 0 to be printed; it are the-inking rollers for the black color and d the inking rollers for the red color; 6 is the auxiliary cylinder for the black color and e the auxiliary cylinder for the red color. 1

The auxiliary cylinders have a coating of gelatin, india rubber or any suitable material which is able to take up and to give again the ink; and the said auxiliary cylinders have with their coating the same diameter as that of the printing cylinder.

. Means, not shown on the drawing, oblige the auxiliary cylinders to be rotated at' the same speed as the printing cylinder. I

' The workingis as followsz Theprinting cylindera having been provided in any known manner with the whole of the composition which. is to be printed, the machine is set in'to rotation, and the printing cylinder a prints on the coating of the auxiliary cylinders e, e the whole of the said com printed on the said auxiliary cylinders he in'accordance with the composition entire printing cylinder; this being, in fact, very easy with suitable marks.- The machine is .then ready for printing.

hen the machine has been started, the

parts 9 ofv the auxiliary cylinder 6 take up the black color from the inking rollers 03 and give itagain to the corresponding parts it of thepri'nting cylinder (2, and the'parts g of the auxillary cylinder'e take up the 4 red color from'the inking rollers d and parts it of the said composition in black, vWhile the parts hf are printed in give it again to the corresponding parts it of the "printing cylinder. The printing cylinder prints directly on the paper or the like 0 the Whole of the composition and the red.

It is obvious. that theinvention is not in are printed any way limited to the manner of realization of the process hereinbefore described and'that' it comprises all possible variations.

.Having now particularly described and fi ascertained the nature of the said invention,

and in What manner the same is to-be performed I declare that What I claim is The process of color printing consisting in "removably disposing auxiliary cylinders between the main cylinder and inking 1'oll ers of a printing press and directly printing by the main cylinder all the composition to be printed on the auxiliary cylinders, dismounting and removing the auxiliary cylindeis and removing parts of-the composition printed thereon from-the m'ain'cylinder that are'not to be printed'with any particular color 'of ink that may be used with the auxiliary cylinders, andthen remounting the auxiliary cylinders between the main cylinderand inking rollers to carry the ink from the said rollers to the'main cylinder in accordance With the remaining printing portions of said auxiliary cylinders.

- In testimony whereof I have hereunto set my -hand in presence of two subscribing witnesses.

' PIERREBONNIER. 'Witnesses:

PAUL BLUM, H. C. Coxn 

